US4855558A - Clamping device for a tool at a machine tool, particularly at a die sinking electric discharge machine - Google Patents

Clamping device for a tool at a machine tool, particularly at a die sinking electric discharge machine Download PDF

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Publication number
US4855558A
US4855558A US07/073,574 US7357487A US4855558A US 4855558 A US4855558 A US 4855558A US 7357487 A US7357487 A US 7357487A US 4855558 A US4855558 A US 4855558A
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United States
Prior art keywords
clamping device
draw bar
chuck
rails
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/073,574
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English (en)
Inventor
Borje K. Ramsbro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
System 3R International AB
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System 3R International AB
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Priority claimed from DE19863625608 external-priority patent/DE3625608A1/de
Priority claimed from DE19863639801 external-priority patent/DE3639801A1/de
Application filed by System 3R International AB filed Critical System 3R International AB
Assigned to SYSTEM 3R INTERNATIONAL AB reassignment SYSTEM 3R INTERNATIONAL AB ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RAMSBRO, BORJE K.
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0063—Connecting non-slidable parts of machine tools to each other
    • B23Q1/0072—Connecting non-slidable parts of machine tools to each other using a clamping opening for receiving an insertion bolt or nipple
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/904—Quick change socket
    • Y10S279/905—Quick change socket with ball detent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/12—Chucks or sockets with fluid-pressure actuator
    • Y10T279/1241—Socket type

Definitions

  • the invention refers to a clamping device for a tool at a machine tool, particularly a die sinking electric discharge machine.
  • a machine tool particularly a die sinking electric discharge machine.
  • Such machine is equipped with a chuck having two pairs of rails projecting from the underside of the chuck and arranged in a rectangular cross.
  • the rails are provided with reference surfaces for adjusting the tool with respect to an x-direction and a y-direction relative to the machine tool, said directions extending transversely to a center line of the chuck.
  • a coupling device is known from No. 4,615,688 which may also be utilized at a die sinking electric discharge machine for working a workpiece by spark erosion by means of an electrode.
  • the electrode has to be coupled to the chuck of a quill of the die sinking electric discharge machine.
  • a fixed system of coordinates is defined, the x-y-plane of which extends transversely to the movement of the quill which may be moved up and down in z-direction.
  • posts having reference surfaces are set upon the tool which abut against a surface of the chuck for adjustment in z-direction when clamping the tool.
  • the underside of the chuck is provided with prismatic bars engaging in slots of a center plate for positioning the electrode within the x-y-plane.
  • the center plate is arranged between the electrode and the chuck.
  • a central pin of the chuck penetrates into a center hole and an eccentric pin into a slot of the center plate for centering and axially aligning said plate.
  • the known coupling device shows means for aligning and centering a tool within the system of machine coordinates, it does not provide for means which allow clamping and unclamping of the tool to the chuck.
  • Such clamping means represent an important portion of the over-all coupling device because it has to support a great tool weight and to urge the tool into engagement with the aligning means. Otherwise, the desired repeatability of exact alignment is not maintained.
  • the clamping means should allow for rapid and easy locking and unlocking to facilitate an exchange of electrodes.
  • a further object of the invention is to provide a clamping device which is particularly suitable for being utilized for clamping an electrode to a die sinking electric discharge machine in a properly adjusted manner with reference to a machine-fixed system of reference surfaces, whereby the adjustment is maintained even after a number of clamping and releasing operations have occurred.
  • a reference system is to be provided permitting the exact manufacture of the electrode outside the machine tool without the need of adjusting the finished electrode in the machine tool.
  • a further object of the invention is to provide the clamping means with a coupling device permitting the fast coupling and releasing of the tool from the chuck.
  • the object of the invention is solved in that in the clamping device mentioned above there are several posts projecting from the underside of the chuck, which are provided with reference surfaces at their free front surfaces, which extend in the x-y-plane, with the rails being eccentric and offset angularly against each other and in that a tool holder is provided with a plane surface for abutting to the posts, into which two pairs of slots are cut which are in alignment with the rails and provided with elastic lips intended for abutment to the rails, the holder being equipped with a center bore with fixing elements for fixing and releasing a draw bar.
  • the counter references for the x-, y- and z-direction on the tool holder are arranged in a single plane, i.e. in its surface, permitting a simple and at the same time extremely exact machining of the holder.
  • the tool can be mounted to that side of the tool holder opposite to the surface and exactly machined to its intended shape outside of the machine tool.
  • the invention furthermore suggests for this purpose that the side surfaces or edges of the tool holder be exactly aligned to the x- and y-direction.
  • the properly shaped tool mounted to the tool holder is then clamped into the chuck by coupling the lower end of the draw bar to the tool holder and inserting the upper portion of the draw bar into the chuck.
  • the surface of the tool holder then serves as counter reference for the posts and the slots serve as counter reference for the rails.
  • two pairs of rails are preferrably provided such that the connecting line of one pair of rails crosses rectangularly the connecting line of the other pair of rails and the rails of one pair are opposite to each other relative to the center line of the chuck.
  • the tool holder is advantageously provided with at least two side surfaces, of which one is exactly parallel to a first pair of slots and the other to a second pair of slots. This facilitates the use of the tool holder for adjusting the tool within the system of coordinates outside of the machine tool.
  • the fixing elements are formed as at least one tongue which extends radially into the center bore and under which a radially projecting nose located at the lower end of the draw bar may be held axially.
  • the draw bar may be provided with an axially movable slide near its lower end.
  • the draw bar need only be turned by about 45° when there is provided one tongue between two adjacent slots respectively in circumferential direction of the center bore.
  • the slide is advantageously shaped as ring embracing the draw bar, comprising at least one, advantageously four fingers arranged in equal circumferential distance to each other and extending axially towards the lower end of the draw bar, whereby their respective circumferential width corresponds to the distance between adjacent noses.
  • the handling of the slide ring is facilitated when the slide ring is held non-rotatably on the draw bar.
  • at least one of the guiding grooves is preferably shorter in axial direction than the other guiding grooves, whereby at least that finger, the thickening of which penetrates the shorter guiding groove, is radially elastic.
  • the invention is of particular importance for manufacturing an electrode used in the spark-erosive machining of workpieces by means of a die sinking electric discharge machine.
  • the invention is hence described in detail for this application by means of the embodiment shown in the enclosed drawings, of which show:
  • FIG. 1 a top view of the underside of a chuck of the machine
  • FIG. 2 a top view of the upper side of an electrode holder without draw bar
  • FIG. 3 a view of the electrode holder attached to the chuck by means of a draw bar, partly in section;
  • FIG. 4 a detail from FIG. 3 in enlarged scale
  • FIG. 5 a view of the electrode holder with inserted draw bar
  • FIG. 6 a sectional view of the chuck with attached electrode holder
  • FIG. 7 a section through the electrode holder along line II--II from FIG. 2;
  • FIG. 8 the view of a draw bar with fixing ring, partly in section, as well as the electrode holder cut in x-direction;
  • FIG. 9 the view of the draw bar of FIG. 8 after being rotated by 90° with locked fixing ring and the electrode holder cut in y-direction;
  • FIG. 10 a view of the draw bar with fixing ring from below.
  • the clamping device mainly comprises three components, namely a chuck designated with 1 with a centric draw bar mounting and reference elements at its underside, an electrode holder designated with 2 with plane surface and slots on its upper side, and a draw bar 3 which may be coupled to electrode holder 2.
  • electrode holder 2 When viewed from the top electrode holder 2 has a square form and comprises two pairs of parallel, opposite side surfaces 22, 24, 26, 28, of which side surfaces 22, 24 of the first pair exactly extend in x-direction and side surfaces 26, 28 of the second pair exactly extend in y-direction.
  • the planely ground surface 30 lies parallel to the x-y-plane and thus rectangularly to side surfaces 22, 24, 26, 28.
  • Each slot 36, 38 of the second pair is placed symmetrically to center plane 5 of electrode holder 2, which comprises the y-direction, and extends between center bore 40 and side surface 22 resp. 24.
  • Slot 32 forms at its transition to surface 30 the edges 32a, 32b opposite relative to center plane 4, and slot 34 correspondingly forms opposite edges 34a, 34b.
  • slot 36 forms at its transition to surface 30 the edges 36a, 36b opposite relative to center plane 5, and slot 38 correspondingly forms opposite edges 38a, 38b.
  • Slots 32, 34, 36, 38 subdivide surface 30 in four surface sections 30a to 30d.
  • Surface section 30a is located in that corner section of the electrode holder surface created by side surfaces 22 and 26, surface section 30b is determined by side surfaces 26 and 24, surface section 30c by side surfaces 24 and 28 and surface section 30d by side surfaces 28, 22.
  • each flank of each slot a recess slightly bowed downwards is cut into the material of electrode holder 2 at about one third of the slot depth, which corresponds approximately to the width of the slot.
  • Each recess has a length which may equal the length of the associated edge.
  • the two opposite recesses 31a and 31b originate from slot 32, the two opposite recesses 35a, 35b from slot 36 and the two opposite recesses 37a, 37b from slot 38.
  • the inner ends of the recesses are designated with the reference numerals mentioned above.
  • the recesses make it possible that the electrode holder material remaining between them and the adjacent surface section assumes the form of a lip which is elastic in z-direction and which is provided with the respective edge.
  • the opposite lips bordering slot 32 on both sides are designated with 32c, 32d, the lips bordering slot 34 with 34c, 34d, the lips bordering slot 36 with 36c, 36d and the lips bordering slot 38 with 38c, 38d.
  • FIG. 6 shows that an electrode 9 may be mounted to the underside of electrode holder 2.
  • One possibility of mounting is to create in each of the four surface sections 30a to 30d respectively one through hole for a bolt, e.g. bolt 15, with the aid of which electrode 9 can be screwed to electrode holder 2.
  • the exact position of each through bore 42, 44, 46, 48 is explained below.
  • Each through bore 42, 44, 46, 48 is expanded at the upper side of electrode holder 2 in such a way that none of the bolt heads will protrude over surface 30 when electrode 9 is screwed to holder 2 by said bolts.
  • Chuck 1 connected with the die sinking electric discharge machine has an underside of cylindrical outer contour as shown in FIGS. 1 and 3.
  • a ring surface 50 is planely ground such that it lies exactly parallel to the x-y-plane and thus transversely to center line 1a of chuck 1.
  • Ring surface 50 encloses a circular surface 51, the surface quality of which need not meet any special requirements.
  • Draw bar mounting 10 ends in the middle of circular surface 51.
  • the square surface 30 of electrode holder 2 is dimensioned in such a way in x- and y-direction that the geometrical projection of surface 30 to the underside of the chuck lies completely within ring surface 50 and covers completely circular surface 51, as shown by the dotted lines 22a, 24a, 26a, 28a in FIG. 1.
  • ring surface sections 50a, 50b, 50c, 50d in the four fields produced by center plane 6 containing the x-direction and center plane 7 containing the y-direction of ring surface 50.
  • the posts and chuck part 72 having ring surface 50 may be made of one part.
  • posts 52, 54, 56, 58 are centrically bored for respectively receiving a screw 53, 55, 57, 59 in such a way that the screws do not protrude over a ring-shaped reference surface 52a, 54a, 56a, 58a on the free front face of each post.
  • the reference surfaces are made very narrow by appropriate slopes towards the through holes and the outer periphery of the respective post.
  • reference surfaces 52a, 54a, 56a and 58a are planely ground, are of equal distance to ring surface 50 and lie exactly parallel to the x-y-plane.
  • reference surfaces 52a, 54a, 56a and 58a individually and altogether, constitute a reference in z-direction for exactly positioning electrode 9 via electrode holder 2 when surface 30 of the latter abuts against said reference surfaces 52a, 54a, 56a, 58a.
  • Two pairs of rails 62, 64, 66 and 68 of equal, substantially rectangular cross-section project from circular surface 51 between draw bar mounting 10 and the periphery of circular surface 51, of which each rail 62, 64 of the first pair is placed symmetrically to center plane 6 and each rail 66, 68 of the second pair symmetrically to center plane 7.
  • the rails are worked out of the material of chuck part 72.
  • the outer contours of the rails are all of the same type, hence only that of rail 62 is described in detail.
  • Rail 62 has three pairs of plane side surfaces extending transversely to the periphery of the circular surface and symmetrically to center plane 6: the side surfaces 61a, 61b bordering circular surface 51 are substantially transverse to circular surface 51. Side surfaces 63a, 63b adjoining side surfaces 61a, 61b are only slightly inclined towards center plane 6, while side surfaces 65a, 65b extending between front surface 62a of rail 62 and side surfaces 63a, 63b include a greater angle with center plane 6, of for instance approximately 45°. Side surfaces 63a, 63b serve as reference surfaces for exactly positioning electrode holder 2 in the x-y-plane.
  • the transition from side surfaces 61a, 61b to side surfaces 63a, 63b has a distance to ring surface 50, which is smaller than the distance of reference surfaces 52a, 54a, 56a, 58a to ring surface 50.
  • the transition from the slightly inclined side surfaces 63a, 63b to the more inclined side surfaces 65a, 65b has a distance to ring surface 50, which is greater than the distance of each of the reference surfaces 52a, 54a, 56a, 58a to ring surface 50.
  • Front surface 62a has, of course, such a height above ring surface 50 that when electrode holder 2 is clamped to chuck 1 the base of slot 32 is not touched by rail 62.
  • electrode holder 2 Due to this penetration of the rails into the slots the exact positioning of electrode holder 2 in z-direction ensures simultaneously its exact positioning in x-direction and y-direction.
  • the dynamic fixing of electrode holder 2 in x- and y-direction excludes any clearance.
  • edges 32a, 32b; 34a, 34b; 36a, 36b; 38a, 38b are produced with the creation of surface 30 without the need of changing the setting of the machine producing the electrode holder.
  • Edges 32a, 32b, 34a, 34b, 36a, 36b, 38a, 38b as well as those parts of the rails having reference surfaces and the posts with reference surfaces may be specially hardened; from FIG. 3 it can be seen that for this purpose rail 68 is equipped with a top 68a of hard metal or tungsten carbide, at which reference surfaces 67a, 69b are machined.
  • electrode holder 2 is provided with a plane surface 30 which just as the planes and side edges 22, 24, 26, 28 exactly aligned in x-direction resp. y-direction may be used as reference surfaces for adjusting electrode 9 during its manufacturing outside the die sinking electric discharge machine.
  • Each through bore 42, 44, 46, 48 is arranged in an area of the associated surface section 30a, 30b, 30c, 30d, which lies completely within the supporting surfaces 42a, 44a, 46a, 48a.
  • each of the slots 32, 34, 36, 38 ends in center bore 40 of the electrode holder 2.
  • Wall sections 40a, 40b, 40c, 40d of center bore 40 remaining between respectively two adjacent slots project over a part of their axial thickness into center bore 40 (FIGS. 2 and 7) thus forming tongues 102, 104, 106, 108 which are used as fixing elements for mounting draw bar 3 to electrode holder 2.
  • chuck 1 is provided with a cupular chuck part 72, at the underside of which ring surface 50 is machined.
  • Chuck part 72 is attached to a plate 74 at the machine by means of bolts.
  • Plate 74 has a central blind hole 76 which is aligned to draw bar mounting 10 and surrounded by a ring-shaped wall 78.
  • a mounting ring 80 is axially movable.
  • a spring 82 supported by the inner base of chuck part 72 urges the mounting ring 80 in an upper locking position. This position of mounting ring 80 is shown in FIG. 6.
  • a ring-shaped pressure chamber 94 below mounting ring 80, which may be connected to a source of compressed air via a channel 96 penetrating casing 97 of chuck part 72.
  • Pressure chamber 94 is furthermore connected to four channels 98 penetrating the base of chuck part 74, which communicate with pressure channels 51a of screws 53, 55, 57, 59.
  • channel 96 is connected to a soure of compressed air
  • mounting ring 80 is pressed in addition to the force of spring 82 in locking position.
  • compressed air escapes from pressure channels 51a and cleans supporting surfaces 42a, 44a, 46a, 48a from any particles which possibly might adhere thereon when electrode holder 2 is attached.
  • mounting ring 80 For removing electrode holder 2 with draw bar 3 the upper side of mounting ring 80 is connected via channels 91, 93 to a compressed air source, the pressure of which surmounts the force of spring 82 (when turning off the locking air pressure) and moves mounting ring 80 in its lower open position. Balls 86, 88 then escape outwards into the depression of mounting ring 80 thus clearing the path for head 90 of draw bar 3.
  • draw bar 3 which, except of some radial recesses, has an essentially cylindrical form only its lower section below ring slot 8 for receiving a sealing washer, not shown, is here described (FIGS. 8-10).
  • the cylindrical lower section 11 has on two opposite circumferential sections respectively flattened portions 12, 13, at which draw bar 3 may be gripped by e.g. the fork of a gripper and transported by it.
  • draw bar 3 has a length which is a little bit greater than the depth of center bore 40.
  • noses 112, 114, 116, 118 protrude radially outwards, which in circumferential direction have a length which is not greater than the width of one of slots 32, 34, 36, 38.
  • noses 112, 114, 116, 118 do not protrude more than the inside diameter of center bore 40 in its lowest section.
  • guiding grooves 111, 113, 115, 117 between respectively two adjacent noses 112, 114, 116, 118 in the form of flattenings of the cylindrical outer contour of section 11.
  • the two opposite guiding grooves 111, 115 extending parallel to the flattenings 12 and 13 end in axial direction in spaced relationship before the associated flattened portion 12, 13, as can be seen at the example of guiding groove 111 in FIG. 8.
  • the two other opposite guiding grooves 113, 117 extend at section 11 in axial direction away from front surface 36 ending in the height of said flattened portions 12, 13, as can be seen at the guiding groove 117 in FIGS. 8 and 9.
  • the lower section 11 of draw bar 3 is surrounded by a slide designated with 150, which in the example shown has the form of a fixing ring provided with fingers of, for instance, plastic material.
  • Ring 150 can be moved in axial direction on lower section 11 and is provided above the fingers with a circumferential radially protruding handling rib 152.
  • Four in circumferential direction equally spaced fingers 142, 144, 146, 148 extend downwards from rib 152, which contact with their inner surfaces the lower section 11.
  • fingers 142, 144, 146, 148 have respectively a width which fills completely the intermediate space between respectively two adjacent noses 112, 114, 116, 118.
  • each finger 142, 144, 146, 148 is provided with a thickening which may extend into respectively one of the guiding grooves 111, 113, 115, 117.
  • the thickenings of opposite fingers 142, 146 are permanently engaged in the associated long guiding grooves 113, 117, while the thickenings of the opposite radially elastic fingers 144, 148 engage only the shorter guiding grooves 115, 111 when in locking position as shown in FIG. 9 and slip upwardly out of guiding grooves 115, 111 when in unlocked lifted position as shown in FIG. 8.
  • the greatest width of each of fingers 142, 144, 146, 148 is in any way smaller that the width of one of slots 32, 34, 36, 38. Due to the engagement of the rearward thickenings of fingers 142, 146 in guiding grooves 113, 117 ring 150 is held in unrotatable but axially movable position on the lower section 11 of draw bar 3.
  • Draw bar 3 In this position of draw bar 3 respectively one of fingers 142, 144, 146, 148 grips under respectively one of tongues 102, 104, 106, 108.
  • Draw bar 3 is thus coupled with electrode holder 2 and can then be inserted into the chuck mounting of a die sinking electric discharge machine, as explained above.
  • draw bar ring 150 For releasing the draw bar ring 150 is moved by hand axially upwards along lower section 11 by using handling rib 152, which is easily accessible above the slots and the upper radially expanded sections of the center bore. Due to their radial elasticity fingers 144, 148 easily escape from guiding grooves 111, 115. Draw bar 3 can then be rotated to such a degree that its noses are released from the engagement with the tongues, i.e. draw bar 3 can then be lifted off upwards without interference by electrode holder 2.
  • the above described fixing mechanism for coupling draw bar 3 with electrode holder 2 is not limited to the special design of ring 150.
  • a simple axially movable slide attached to lower section 11 may be used, which engages in form-fit manner either in one of the slots or also in a radial recess at one of the tongues in circumferential direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US07/073,574 1986-07-29 1987-07-14 Clamping device for a tool at a machine tool, particularly at a die sinking electric discharge machine Expired - Lifetime US4855558A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19863625608 DE3625608A1 (de) 1986-07-29 1986-07-29 Spannvorrichtung fuer ein werkzeug an einer werkzeugmaschine, insbesondere einer senkerodiermaschine
DE3625608 1986-07-29
DE19863639801 DE3639801A1 (de) 1986-11-21 1986-11-21 Spannvorrichtung fuer ein werkzeug an einer werkzeugmaschine, insbesondere einer senkerodiermaschine
DE3639801 1986-11-21

Publications (1)

Publication Number Publication Date
US4855558A true US4855558A (en) 1989-08-08

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ID=25846015

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Application Number Title Priority Date Filing Date
US07/073,574 Expired - Lifetime US4855558A (en) 1986-07-29 1987-07-14 Clamping device for a tool at a machine tool, particularly at a die sinking electric discharge machine

Country Status (4)

Country Link
US (1) US4855558A (de)
EP (1) EP0255042B1 (de)
DE (1) DE3760711D1 (de)
ES (1) ES2011286B3 (de)

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US5603850A (en) * 1995-05-23 1997-02-18 Holt; Craig S. Wood imprinting method and apparatus
EP0846519A1 (de) * 1996-12-06 1998-06-10 System 3R International AB Automatische luftdruckgesteuerte Werkzeugaufnahme
US5791803A (en) * 1994-12-13 1998-08-11 3R International Ab Compressive holding device
US5906378A (en) * 1996-03-05 1999-05-25 System 3R International Ab Coupling adapter
US5909882A (en) * 1996-12-06 1999-06-08 System 3R International Ab Pneumatic driven automatic chuck
WO1999033601A1 (en) * 1997-12-24 1999-07-08 Precision Die & Machine Company Edm tool holder
US5997011A (en) * 1997-01-23 1999-12-07 System 3R International Ab Retaining device, in particular for a workpiece
CN1047977C (zh) * 1994-08-10 2000-01-05 曼弗雷德·申茨 工具或工件的固定装置
US6015961A (en) * 1997-12-24 2000-01-18 Precision Die & Machine Co. EDM tool holder
US6036198A (en) * 1999-04-01 2000-03-14 Kramer; Hy Coupling for attaching a tool to a chuck
US6082516A (en) * 1998-01-22 2000-07-04 Amada Engineering & Service Co., Inc. Variable height adjustable punch assembly having quick release stripper plate
US6103987A (en) * 1997-09-07 2000-08-15 System 3R International Ab Retaining plate for a machine tool work piece
WO2000053361A1 (en) * 1999-03-11 2000-09-14 Sunspot Edm Tooling Tool holder
WO2000054918A1 (en) * 1999-03-15 2000-09-21 Stephen Bartok Electric discharge machine with a continuous electrode of predetermined length
US6144123A (en) * 1998-07-29 2000-11-07 H.S.D. S.R.L. Electric chuck
US6160236A (en) * 1996-12-02 2000-12-12 System 3R International Ab Clamping system
US6252192B1 (en) 2000-01-18 2001-06-26 Precision Die & Machine Company EDM tool holder
EP1127655A2 (de) * 2000-01-29 2001-08-29 A. Römheld GmbH & Co KG Ausblaseinrichtung für eine Mehrfachkupplung
US6336767B1 (en) 1998-12-16 2002-01-08 System 3R International A.B. Coupling device having two coupling members and clamping means
EP1219374A1 (de) * 2000-08-23 2002-07-03 MegaPlast GmbH & Co. KG Elektrodenhalter
US6444941B1 (en) 1997-12-09 2002-09-03 Anthony A. Russo Tool holding system
US6485214B2 (en) * 1998-07-04 2002-11-26 System 3R International Ab Coupling device
US6536754B2 (en) 2000-06-13 2003-03-25 System 3R International Ab Levelling apparatus
US6603089B1 (en) * 2000-05-15 2003-08-05 Richard A. White Quick release chuck for electrodes
US6609851B2 (en) 1998-12-16 2003-08-26 System 3R International Ab Device for coupling a work piece to a machine tool
US6623015B2 (en) 2000-08-25 2003-09-23 System 3R International Ab Clamping chuck
US6642469B2 (en) * 2000-05-08 2003-11-04 Marjan Dobovsek Electrode clamping system for sink-type electrical discharge machines
US6674041B2 (en) * 2001-06-11 2004-01-06 System 3R International Ab Sintered holder for a workpiece or tool
US20040056495A1 (en) * 2002-09-24 2004-03-25 Kramarczyk Mark A. Pick-and-place tool
US6811150B2 (en) 1999-04-15 2004-11-02 System 3R International Ab Holder for accurate positioning of a workpiece
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US20080135528A1 (en) * 2004-08-26 2008-06-12 Hakan Dahlquist Clamping Device For the Tool of a Machine Tool, Especially a Plunge Electrical Discharge Machine
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US20040056495A1 (en) * 2002-09-24 2004-03-25 Kramarczyk Mark A. Pick-and-place tool
US7000966B2 (en) * 2002-09-24 2006-02-21 General Motors Corporation Pick-and-place tool
CN100410014C (zh) * 2003-11-21 2008-08-13 日立比亚机械股份有限公司 机械加工设备
CN1689752B (zh) * 2004-04-22 2012-02-22 厄罗瓦公司 具有卡盘和可松开连接在卡盘上的托板的夹紧设备
US20080135528A1 (en) * 2004-08-26 2008-06-12 Hakan Dahlquist Clamping Device For the Tool of a Machine Tool, Especially a Plunge Electrical Discharge Machine
US8047520B2 (en) 2004-10-29 2011-11-01 Pascal Engineering Corporation Movable article coupling apparatus
US20070267794A1 (en) * 2004-10-29 2007-11-22 Pascal Engineering Corporation Movable Article Coupling Apparatus
US8758543B2 (en) 2006-03-30 2014-06-24 Livedo Corporation Disposable absorbent article and method of manufacturing the same
US20100107396A1 (en) * 2006-03-30 2010-05-06 Livedo Corporation Disposable absorbent article and method of manufacturing the same
US20090315280A1 (en) * 2006-04-27 2009-12-24 System 3R International Ab Chucking fixture with device for measuring the distance between a chuck and a toolholder or workholder
CN101432097B (zh) * 2006-04-27 2013-05-01 系统3R国际股份有限公司 用于工具或工件的夹紧装置及利用该夹紧装置机加工工件的方法
US8308169B2 (en) 2006-04-27 2012-11-13 System 3R International Ab Chucking fixture with device for measuring the distance between a chunk and a toolholder or workholder
WO2007124809A1 (de) * 2006-04-27 2007-11-08 System 3R International Ab Spannvorrichtung mit einrichtung zur messung der distanz zwischen einem spannfutter und einem werkzeug- oder werkstückhalter
EP1849556A1 (de) * 2006-04-27 2007-10-31 System 3R International AB Spannvorrichtung mit Einrichtung zur Messung der Distanz zwischen einem Spannfutter und einem Werkzeug- oder Werkstückhalter
US8272645B2 (en) * 2008-04-08 2012-09-25 Kobe Steel, Ltd. Tool replacing device
US20090253563A1 (en) * 2008-04-08 2009-10-08 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tool replacing device
US8912466B2 (en) 2010-02-26 2014-12-16 Agie Charmilles Sa Electrode management device for electrical discharge machining machine tools
US20110226741A1 (en) * 2010-02-26 2011-09-22 Magnus Bobeck Electrode management device for electrical discharge machining machine tools
CN102189304B (zh) * 2010-02-26 2014-08-20 阿杰·查米莱斯股份有限公司 用于电火花加工机床的电极管理装置
CN102189304A (zh) * 2010-02-26 2011-09-21 阿杰·查米莱斯股份有限公司 用于电火花加工机床的电极管理装置
US8963040B2 (en) 2010-04-28 2015-02-24 Perfect Point Edm Corporation Method of separating fastener shanks from heads or frames
WO2012034910A1 (de) 2010-09-14 2012-03-22 Parotec Ag Vorrichtung zur positionsdefinierten aufspannung eines gegenstandes
US20140252726A1 (en) * 2013-03-08 2014-09-11 System 3R International Ab Clamping chuck with integrated drawbar
KR20140110783A (ko) * 2013-03-08 2014-09-17 시스템 3알 인터내셔널 에이비 일체형 드로우 바를 갖는 클램핑 척
US9527139B2 (en) * 2013-03-08 2016-12-27 System 3R International Ab Clamping chuck with integrated drawbar
US20140367364A1 (en) * 2013-06-12 2014-12-18 Sodick Co., Ltd. Sinker electric discharge machining apparatus
US9440301B2 (en) * 2013-06-12 2016-09-13 Sodick Co., Ltd. Sinker electric discharge machining apparatus
US20150061238A1 (en) * 2013-09-03 2015-03-05 Cherng Jin Technology Co., Ltd. Positioning board of chuck
CN104029033A (zh) * 2014-04-08 2014-09-10 宁波旭升机械有限公司 一种加工中心加工标准底板
US10960480B2 (en) 2014-06-19 2021-03-30 System 3R International Ab Solid pallet for clamping chucks
CN112091658A (zh) * 2020-09-17 2020-12-18 中国航发航空科技股份有限公司 一种工装夹具的机床花盘式的定心装置及其定心方法
CN112091658B (zh) * 2020-09-17 2022-07-12 中国航发航空科技股份有限公司 一种工装夹具的机床花盘式的定心装置及其定心方法

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EP0255042A1 (de) 1988-02-03
EP0255042B1 (de) 1989-10-11
ES2011286B3 (es) 1990-01-01

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